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Search: id:A160517
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| A160517 |
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A walk of 10-divisible "less regular" figurate cuboctahedra, from sequence A160249. |
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+0
1
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| 10, 20, 50, 80, 140, 200, 300, 400, 550, 700, 910, 1120, 1400, 1680, 2040, 2400, 2850, 3300, 3850, 4400, 5060, 5720, 6500, 7280, 8190, 9100, 10150, 11200, 12400, 13600
(list; table; graph; listen)
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OFFSET
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1,1
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COMMENT
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This is only the first walk of 10-divisibles, but it is the closest to the diagonal, and so its hedra will look the most regular for their size. It occurs only 5root2/2 moves from the diagonal. The next closest is 7root2 moves away, and is half the density.
Many of these are 100-divisible. The source array contains many numbers that are multiples of high powers of 10, including a ten thousand, a 1001000, a 2005000 and a 3 million.
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REFERENCES
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Polyhedra primer / Peter Pearce and Susan Pearce. Published/Created: New York : Van Nostrand Reinhold, c1978. Description: viii, 134 p. : ill. ; 24 cm. ISBN: 0442264968
The book of numbers / John H. Conway, Richard K. Guy. Published/Created: New York, NY : Copernicus c1996. Description: ix, 310 p. : ill. (some col.) ; 24 cm. ISBN: 038797993X
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CROSSREFS
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Sequence in context: A110804 A048063 A007927 this_sequence A072081 A034087 A117562
Adjacent sequences: A160514 A160515 A160516 this_sequence A160518 A160519 A160520
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KEYWORD
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easy,nonn,tabl,uned
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AUTHOR
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Chris G. Spies-Rusk (chaosorder4(AT)gmail.com), May 16 2009
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